Littelfuse SE-330-20-00 - SE-330-20-00 is an advanced ground-fault and neutral-grounding resistor monitor with a supply voltage ac of 28–52 and a supply voltage dc of 36–72. Network communications is offered via USB.
Littelfuse

SE-330-20-00

Alternate Item Number: SE-330-20-00

UPC: 079458988451


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Overview

The Littelfuse SE-330-20-00 stands as a sophisticated and indispensable component for ensuring the integrity and safety of industrial electrical systems. As an advanced ground-fault and neutral-grounding resistor monitor, this unit is engineered to provide critical oversight, detecting deviations that could lead to equipment damage or hazardous conditions. Its robust design and precise monitoring capabilities make it a cornerstone for reliable power distribution in demanding industrial environments. The SE-330-20-00 is characterized by its versatile supply voltage capabilities, operating effectively within a range of 28–52 VAC and 36–72 VDC. This broad operational window ensures compatibility with a wide array of industrial power configurations, from smaller auxiliary systems to larger main power feeds. Such flexibility is paramount in industrial settings where power infrastructure can vary significantly. A key differentiator for the SE-330-20-00 is its integrated network communication via USB. This modern interface facilitates seamless data acquisition, system configuration, and remote monitoring. Industrial facilities can leverage this connectivity to integrate the monitor into existing SCADA systems, data logging platforms, or diagnostic tools, enabling proactive maintenance and rapid response to potential issues. The ease of data transfer and analysis provided by the USB port streamlines operational efficiency and reduces downtime. Key features and benefits of the Littelfuse SE-330-20-00 include: * **Advanced Ground-Fault Monitoring:** Detects subtle ground faults that could escalate into significant problems, protecting sensitive equipment and personnel. * **Neutral-Grounding Resistor Oversight:** Monitors the integrity of the neutral-grounding resistor, a critical element in system stability and fault current limitation. * **Wide Voltage Range:** Operates reliably across 28–52 VAC and 36–72 VDC, offering broad application suitability. * **USB Network Communication:** Simplifies integration, data management, and remote diagnostics for enhanced operational control. * **Industrial Durability:** Built to withstand the harsh conditions often found in manufacturing plants, processing facilities, and other industrial sites. This monitor is particularly vital in industries such as manufacturing, petrochemical, mining, and utilities, where continuous power and stringent safety standards are non-negotiable. By providing early detection of ground faults and ensuring the proper function of grounding resistors, the SE-330-20-00 contributes directly to preventing costly outages, mitigating fire risks, and safeguarding personnel. Littelfuse, a globally recognized leader in circuit protection, brings its extensive expertise and commitment to quality to the SE-330-20-00. Customers can rely on the manufacturer's reputation for producing high-performance, dependable components that meet the rigorous demands of industrial applications. The SE-330-20-00 is more than just a monitor; it's a critical safeguard for operational continuity and safety.
  • Advanced ground-fault and neutral-grounding resistor monitoring
  • Wide supply voltage range: 28–52 VAC / 36–72 VDC
  • USB network communication for easy integration and data management
  • Enhances industrial electrical system safety and reliability
  • Durable design for demanding industrial environments

Specifications

Application
Low- and medium-voltage transformers and generators
Brand Name
Littelfuse
Connection Type
USB
Series
SE-330
Special Features
Continuous NGR monitoring
Sub Brand
SE 330 Series
Type
Neutral-grounding resistor monitor
Voltage Rating
28–52 VAC / 36–72 VDC
Package Dimensions (L x W x H)
5.8 IN x 3.9 IN x 8.4 IN
Package Dimensions (L x W x H)
14.732 cm x 9.906 cm x 21.336 cm
Package Weight (Imperial)
4.400 L
Package Weight (Metric)
2.000 kg
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Frequently Asked Questions about Littelfuse

What certifications and standards do Littelfuse products comply with?

Littelfuse products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Customers can verify specific product certifications by consulting individual product datasheets on Littelfuse.com, which provide comprehensive details about standards compliance for each component.

What industries and applications are Littelfuse products used for?

Littelfuse products are critical for electrical protection and safety across multiple industrial sectors, including manufacturing, automation, power distribution, and electrical control systems. Their comprehensive product portfolio serves industries that require robust electrical protection, including motor and pump applications, solar installations, programmable logic controllers (PLCs), electrical switch panels, and critical infrastructure environments. Key product lines protect against overcurrent, voltage transients, ground faults, and temperature-related electrical risks, ensuring equipment safety and operational reliability.

What technical support does Littelfuse offer?

Littelfuse offers comprehensive technical support through multiple channels. Their Technical Hotline (800-TEC-FUSE) provides direct access to engineers who can help identify issues and recommend solutions. Additionally, Littelfuse offers extensive online Technical Resources at Littelfuse.com, including datasheets, product manuals, whitepapers, application guides, and online design tools. Their experienced product and application engineers also provide step-by-step support from design to installation.

What are the main product lines offered by Littelfuse?

Littelfuse offers comprehensive industrial protection and control product lines, including fuses, fuse holders, protection relays, temperature sensors, and electrical safety components. Their key product categories span surge protective devices, custom OEM products, electrical switch panels, medium voltage fuses, ground-fault protection relays, motor and pump protection devices, and temperature sensors. These products are designed to minimize electrical safety hazards, limit equipment damage, improve productivity, and safeguard personnel from electrical faults.

What are the key features of Littelfuse products?

Littelfuse products feature exceptional circuit protection technologies with key characteristics including UL/IEC safety standard compliance, low internal resistance, and advanced protective capabilities across multiple product lines. Their components provide critical protection for industrial systems, offering features like overcurrent protection, voltage transient suppression, and resettable protection devices with ultra-low resistance and compact designs. Key product lines include fuses, metal oxide varistors (MOVs), TVS diodes, PolySwitch devices, and specialized electronic protection components that enhance system reliability and safety.

What environmental ratings do Littelfuse products have?

Littelfuse products feature comprehensive environmental ratings, including NEMA Type 1, 2, 3, 3R, 4/4X, 12, and 13 certifications, as well as IP65 protection. These ratings ensure superior protection in diverse industrial environments, with an operating temperature range of -40°F to +131°F (-40°C to +55°C). Many products also include UV-stabilized materials and neoprene gaskets for enhanced durability in outdoor and challenging conditions.

What accessories are available for Littelfuse products?

Littelfuse offers several key accessories across their product lines, including fuse holders, voltage monitoring modules, and terminal connectors. Specific accessories include the LPSM003ZXID (indicating) and LPSM003Z (non-indicating) POWR-SAFE Dead Front fuse holders for Class CC and Midget-Style fuses, the VRM6048 voltage monitor accessory module, and female quick connect terminals (P1015 series) in various wire gauge sizes. These accessories are designed to enhance protection, monitoring, and connectivity for Littelfuse electrical components.

What is Littelfuse's warranty policy?

Littelfuse provides comprehensive warranty details on their official website at www.littelfuse.com/warranty. Customers should visit this page to review the specific warranty terms and conditions for their specific product lines. For direct warranty support or questions, customers can contact Littelfuse Technical Support at 1-800-TEC-FUSE or email [email protected].

What communication protocols do Littelfuse products support?

Littelfuse supports a comprehensive range of industrial communication protocols, including PROFIBUS, PROFINET, EtherNet/IP, DeviceNet, Modbus RTU, and CANopen. Our products provide flexible connectivity solutions across multiple industrial automation platforms, enabling seamless integration with various control systems and network architectures.

How are Littelfuse products typically installed?

Littelfuse products are typically installed using specialized mounting hardware like fuse holders, blocks, and panels designed for specific industrial applications. The POWR-SAFE Dead Front holders, for example, provide optimum protection for Class CC and Midget-Style fuses, supporting installations up to 600 VAC/DC. Installation often involves using precision terminals with strain relief, such as 0.25 in. female quick connect terminals, to ensure secure and safe electrical connections in industrial control systems.